package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.result.Result;
import com.sky.service.ShoppingCartService;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        //判断是否有该菜品或套餐
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());

        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);

        if(list!=null && list.size()>0){
            ShoppingCart shoppingCart1 = list.get(0);
            shoppingCart1.setNumber(shoppingCart1.getNumber()+1);
            shoppingCartMapper.update(shoppingCart1);
        }
        else{
            Long dishId = shoppingCart.getDishId();
            if(dishId!=null){
                Dish dish= dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
            }
            else{
                SetmealVO setmealVO= setmealMapper.getById(shoppingCart.getSetmealId());

                shoppingCart.setName(setmealVO.getName());
                shoppingCart.setImage(setmealVO.getImage());
                shoppingCart.setAmount(setmealVO.getPrice());


            }
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCart.setNumber(1);

            shoppingCartMapper.insert(shoppingCart);
        }
    }

    @Override
    public List<ShoppingCart> list() {
        Long userId = BaseContext.getCurrentId();
        List<ShoppingCart> list = shoppingCartMapper.list(ShoppingCart.builder().userId(userId).build());
        return list;
    }

    @Override
    public void clean() {
        Long userId = BaseContext.getCurrentId();
        shoppingCartMapper.deleteAll(userId);
    }

    @Override
    public void sub(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart=new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if(list!=null && list.size()>0){
            ShoppingCart shoppingCart1 = list.get(0);
            Integer number = shoppingCart1.getNumber();
            if(number>1){
                shoppingCart1.setNumber(number-1);
                shoppingCartMapper.update(shoppingCart1);
            }
            else{
                shoppingCartMapper.deleteById(shoppingCart1.getId());
            }
        }
    }


}
